package com.annimon.everlastingsummer;

import java.io.BufferedReader;
import java.io.FileDescriptor;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Environment;

/**
 * Класс для работы с файловой системой.
 * @author aNNiMON
 */
public final class IOUtil {
    
    private static String SDCARD = Environment.getExternalStorageDirectory().getPath();
    private static String ES = SDCARD + "/everlastingsummer/";
    
    public static Bitmap readBitmap(String file) throws IOException {
        final InputStream is = open(file);
        final Bitmap result = BitmapFactory.decodeStream(is);
        is.close();
        return result;
    }
    
    public static FileDescriptor getFD(String file) throws IOException {
        // TODO: is = ...; result = ..getFD; is.close; return result
        return new FileInputStream(ES + file).getFD();
    }
    
    public static InputStream open(String file) throws IOException {
        return new FileInputStream(ES + file);
    }

    public static String readContents(InputStream is) throws IOException {
        final StringBuilder sb = new StringBuilder();
        final BufferedReader reader = new BufferedReader(new InputStreamReader(is));
        String line;
        while ( (line = reader.readLine()) != null ) {
            sb.append(line);
            sb.append("\n");
        }
        reader.close();
        return sb.toString();
    }
}